package com.cy.pj.common.util;


import com.github.pagehelper.util.StringUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.util.StringUtils;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

public class IPUtils {
    private static Logger logger =
            LoggerFactory.getLogger(IPUtils.class);
    public static String getIpAddr(){
        HttpServletRequest request = ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes()).getRequest();
        String ip = null;
        try {
            ip = request.getHeader("x-forwarded-for");
            if (StringUtil.isEmpty(ip)||"unknown".equalsIgnoreCase(ip)){
                ip = request.getHeader("Proxy-Client-IP");
            }
            if (StringUtils.isEmpty(ip)||ip.length()==0||"unknown".equalsIgnoreCase(ip)){
                ip = request.getHeader("WL-Proxy-Client-IP");
            }
            if (StringUtil.isEmpty(ip)||"unknown".equalsIgnoreCase(ip)){
                ip = request.getHeader("HTTP_CLIENT_IP");
            }
            if (StringUtil.isEmpty(ip)||"unknown".equalsIgnoreCase(ip)){
                ip = request.getHeader("HTTP_X_FORWARDED_FOR");
            }
            if (StringUtil.isEmpty(ip)||"unknown".equalsIgnoreCase(ip)){
                ip = request.getRemoteAddr();
            }

        }catch (Exception e){
            logger.error("IPUtils ERROR ", e);
        }
        return ip;
    }
}
